| delta state |
| List of: | Glossary Items | |
| Subjects: | History and Roll | |
| Contents: | Glossary | |
| A delta state is a "checkpoint in time" of the geometric model. Each change to the model is recorded in a bulletin. The bulletins of each API call that results in changes to the model are collected in a bulletin board. These bulletin boards are collected together into a user-specified checkpoint called a delta state. Delta states are useful for model management tasks such as roll back and roll forward. | |||||